![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
One-to-one function:
\A function is said to be one to one if every input of the domain correspond to different outputs in the range.
\Since input values ![\"image\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d1622611fc88fa0fbe88f093bcb90f93.png\")
and ![\"image\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ab26fd4c5c29d2067a1dab644bcb3065.png\")
in the domain correspond to the same output value ![\"image\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=d46773fa2def1e1453e3720561167d0f.png\")
in the range.
Hence, the function cannot be one to one.
\![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The function is not a one to one function.